Switch for alarm clocks



Oct. 1, 1929. H GREEN SWITCH FOR ALARM CLOCKS Filed May .25, 1927 Patented Oct. 1, 1929- um'rso STATES PATENT OFFICE SWITCH FOB ALARM CLOCKS Application filed May 23, 1927. Serial No. 193,559.

My invention relates to improvements in alarm devices, and the object of the invention is to devise a unitary structure in wh ch an alarm clock is incorporated, together wlth an incandescent bulb and a switch automaticall set in the open position by the winding of the alarm clock mechanism and automatically closed by the operation of such alarm mechanism, whereb the light is automatically lit by the closlng of the switch, and it consists essentially of the arrangement and construction of parts as hereinafter more particularly explained.

Fig. 1 is a perspective view out my device 5 looking at the rear face of the alarm clock.

2o ing connection.

In the drawing like characters oi reference indicate corresponding parts 1n. each figure.

1 indicates a suitable support. 2 is a bracket carried by the support upon which is mounted the socket 3 of an electric light bulb 4. 5 and 6 are ordinary lead wires of the incandescent bulb. 7 is an alarm clock secured in an orifice 7* in the support 1. 8 is the winding key of the alarm mechanism. 9 is a tongue extending from the key 8. 10 is a stationary switch contact carried by the alarm clock and insulated therefrom and connected by a by-pass or shunt wire 11 to one of the leads of the incandescent bulb. 12 is a movable contact also insulated from the alarm clock and pivotally mounted thereon at 13. 14 is a by-pass or shunt wire connected at one end to the movable contact 12 and at the opposite end to the aforesaid lead wire of the circuit leading to the incandescent bulb.

It will thus be seen that a by-pass circuit is formed so as to close the normally closed circuit through the bulb 4:.

14* is a plate provied with a slot 15 I through which the key 8 extends so as to serve as a support for the plate. The plate 14* is provided with an extension 14 which is pivotally connected to the lower end of the contact 12 as indicated at 1%. The plate 14* 1s provided with a flanged portion 16 provlded with a recess 17 into which the tongue 9 of the alarm key 8 extends.

181s a pressure spring bearing upon the top of the flange 16.

To extinguish the light the alarm key 8 of the alarm clock is turned one turn in the settlng direction, the tongue 9 of the key engaging the edge 17 of the slot 17 forcing the plate 1n the direction of arrow, see Figure 2, carrylng the movable contact 12 from the dotted position shown in Figure 2 to the full line position.

When the alarm of the clock is sounded the alarm key 8 turns in the opposite direction so as to carry the tongue 9 against the oppos1te edge 17 of the slot 17 so as to move the plate 143 in the opposite direction to arrow and thereby carry the contacts 12 and 10 into engagement to close the circuit.

lit w ll, or course, be understood that the lead wlre which is by-passed by the wires 11 and 1% is normally opened and closed by the ordinary socket switch 18 of the lamp.

From this description it will be seen that l have devised a very simple device whereby an incandescent bulb may be automatically lit by the operation of the alarm mechanism and therefore simultaneously with the sounding of the alarm.

What I claim as my invention is 1. A switch device to be interposed between the alarm shaft of an alarm mechanism of a clock and a switch terminal of an incandescent light circuit, and comprising a turnable member operated from the alarm mechanlsm and provided with a radial lug, a slide bar having a longitudinal slot through which the turnable member extends, a flange portion overhanging the turnable member and provided with a notch into which the lug extends, and a lever forming the other switch terminal pivoted intermediately of its length and adapted to engage such switch terminal at one end and to be pivotally connected to the movable member at the opposite end.

v 2. A switch device to be interposed between the alarm shaft of an alarm mechanism of a clock and a switch terminal of an incandescent light circuit, and comprising a turnable member having a reduced por tion 0 erated from the alarm mechanism and provi ed with a radial lug, a slide bar havin" a longitudinal slot through whichthe reduced ortion of the turnable member extends, a ange portion overhanging the turnable member and provided with a notch into which the lug extends, a lever formin the other switch terminal ivoted interme iate- 1y of its length and a apted to engage such switch terminal at one end and to be pivotally connected to the movable member at the opposite end, and a spring bearing downward upon the flange portiona HERBERT GREEN.

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